PediRounds

Mannitol — paediatric dose

Weight-based dosing for Mannitol in children. Category: Fluid/Electrolyte.

Dose0.25–0.5 g/kg (1.25–2.5 mL/kg of 20%) over 20 min
Per kg0.25–0.5 g/kg
RouteIV

Clinical notes

Raised ICP. Watch osmolality & volume.

Common questions

What is the dose of Mannitol in children?

0.25–0.5 g/kg (1.25–2.5 mL/kg of 20%) over 20 min. That is 0.25–0.5 g/kg per dose.

How is Mannitol given?

Mannitol is given by IV.

About this page

Compiled from standard paediatric references. Verify against a current formulary and your local protocol.

Spotted something wrong? Report an error on this page — corrections from clinicians are welcome and are reviewed before any change is published.

Last reviewed 2026-08-12.